Cowl.



No. 743,390. PATENTED NOV. a, 1903.

W. J. KAYSER. GOWL.

APPLIOATIOEIILED JAN. 13, 1903.

N0 MODEL.

UNITED STATES Patented November 3, 1903.

PATENT OFFICE.

WILLIAM J. KAYSER, OF GREENBAY, WISCONSIN, ASSIGNOR TO I-IILLMAR DANZ, OF GREENBAY, WISCONSIN.

C O W L.

SPECIFICATION forming part of Letters Patent No. 743,390, dated November 3, 1903.

Application filed January 13. 1903. Serial No. 138,798. (No model.) 7

To a whom it may concern:

Be it known that I, WILLIAM J. KAYSER, a citizen of the United States, residing at Greenbay, in the county of Brown and State" of Wisconsin, have invented certain new and useful Improvements in C'owls, of which the following is a specification, reference being bad to the accompanying drawings, forming a part thereof.

[O The main objects of this invention are to increase the draft of chimneys and ventilators, to exclude rain and snow therefrom, and generally to improve the construction and operation of devices of this class.

It consists in certain novel features of construction and in the arrangement and combinations of parts hereinafter particularly described, and pointed out in the claims.

In the accompanying drawings like letters designatethe same parts in the several figures.

Figure 1 is a medial vertical section of a cowl embodying my invention. Fig. 2 is a horizontal section on the line 2 2, Fig. 1; and

2 5 Fig. 3 is a perspective view of the cowl as designed for and applied to a brick chimney.

For the purpose of illustration and explanation of my inventionIhave shown and described one of the preferable forms in which it may be embodied and which is particularly designed for application to and use with an ordinary brick chimney. The invention, however, is applicable to ventilating-fines, soil-pipes, and chimneys of various forms,

5 sizes, and constructions, and to adapt it to various uses and conditions to whichit is applicable, the details of the construction and arrangement of its parts may be modified without materially affecting its principle or 0 mode of operation or departing from the spirit and intended scope of the invention.

Referring to the drawings, a designates a pipe, which may be made of cylindrical form, as shown, or tapering, according to the size,

shape, and construction of the pipe, flue, or

chimney to which it is applied. In the present case it is shown as provided with an outwardlyflaring base I) for attachment to a brick chimney c, as shown in Fig. 3.

5o cl is a flaring shield encircling the upper open end of the pipe or and extending above veniently made of band iron or steel.

and below the same. It is of largerdiameter than the upper end of said pipe, so as to leave between it and the pipe an annular space or opening. It is connected with said pipe and supported in place by externallyconcaved brackets e, which converge downwardly and extend below the lower edge of the shield. These brackets may be made from a continuous strip of sheet metal, as shown, or may be separately formed. They are riveted or otherwise attached at their lower ends to the outside of the pipe at and at their upper wider ends to the inside of the shield at at or near its lower edge. shield may in certain cases be inverted, so that its smaller end will be at the top instead of at the bottom.

f is a frustum of a cone arranged centrally over the upper end of pipe at with its base, which is of smaller diameter than the'larger end of the shield d, extending a'short distance into said shield or below its upper edge.

It is connected with the shield and held in place by brackets g, which maybe made of band iron or steel bent, as shown, and riveted to the outside of the frustum at its base and to the inside of the shield at its upper end. Around the opening at the upper smaller end of the frustum fare arranged one or more downwardly-flaring rings 71.. The lower ringmay be riveted or otherwise attached to the top of the f rustum and the ring or rings above it supported by thejringbrackets '5, arranged as shown in Figs. 1 and 8 13. Above the upper ring h a conical capj is supported by brackets is, which may be epipe frustumf with the parts above it constitute what may be termed the top of the cowl. p

and some of these parts may be dispensed with and the remaining parts variously arranged in connection with the lower part of the cowl, according to the conditions and requirements of each particular case. 5 The main parts of the cowl are preferably made of galvanized iron; but other kinds of sheet metal may be used in their construction.

The device as hereinbefore described oproe This 65 p intercepted and deflected upwardly between said shield and the pipe at, a part of the air thus entering at the bottom of the shield passing upwardly through the frustum fand a part passing out of the cowl through the annular opening between the top of the shield at and the base of the frustnmf. An upward draft in the pipe at and the chimney, ventilator, or flue to which it is attached is thus produced or accelerated. The wind or lateral air-currents striking the upper faces of the rings h are deflected upwardly, thereby inducing or increasing an upward draft through the frustum f. The smoke, foul air, or gases thus drawn upward through the cowl are discharged therefrom through the opening or openings'between the top of the frustumf and the cap j on the leeward side of the cowl. Wind or outside currents of air pass freely through the ring-brackets, whose axes are parallel with the direction of the aircnrrents; but the air striking the sides of these brackets is deflected outwardly, and thereby not only prevented from obstructing or interfering with the updraft through and the discharge from the cowl, but also made to assist the updraft.

Various changes in minor details of construction and arrangement of parts may be made -to adapt the cowl to the various kinds of chimneys, ventilators, and fines to which itis applicable and to various conditions and requirements within the principle and intended scope of the invention.

I claim- 1. In a cowl the combination of a pipe, a flaring shield encircling the upper open end of said pipe at a distance therefrom and extending above and below the same, and externally-concaved brackets connecting said shield and pipe and extending below the shield outside of the pipe,substantialiy as described.

2. In a cowl the combination of a pipe, a shield encircling the upper open end of said pipe and flaring outwardly toward its upper edge, and eXternally-concaved brackets connecting said shield with said pipe and extending below the shield, substantially as described.

3.-In a cowl the combination of a pipe, a flaring shield encircling the upper open end of said pipe at a distance therefrom and connected therewith by externally concaved brackets which extend below the shield, and a top comprising a cap surmounting the cowl and a flaring ring surrounding the exit below it, substantially as described.

4. In a cowl the combination of a pipe, a flaring shield encircling the upper open end of said pipe and connected therewith by ex- .ternally-concaved brackets which extend below the shield, and a top comprising a frustum, surmounted by a cap and flaring rings surrounding the opening at the upper end of the frustum below the cap, substantially as described.

5. In a cowl the combination of a pipe, an upwardly-flaring shield encircling the upper open end of said pipe, externally-concaved brackets connecting said shield with said pipe and extending below the shield, a frustum extending at its base into said shield below its upper edge, a down wardly-flaring ring surrounding the opening at the upper end of said frustnm, and a cap supported by brackets above said opening, substantially as described.

6. In a cowl the combination of a pipe, a flaring shield encircling the upper open end of said pipe and extending above and below the same at a distance therefrom, externallyconcaved brackets connecti ng said shield with said pipe and extending below the shield and a top comprising downwardly-flaring rings surrounding the opening at the upper end of the cowl, ring-brackets interposed between said rings and supporting one above the other, and a cap above said rings, substantially as described.

7. In a cowl the combination of a pipe having a downwardly-flaring base, an upwardlyfiaring shield encircling the upper open end of said pipe and extending above and below the same, externally-concaved brackets connecting said shield with said pipe and extending below the shield, a frustum extending at its base into the top of said shield which is of larger diameter, downwardlyflaring rings surrounding the opening at the upper end of said frustum, ring-brackets interposed between said rings and supporting one above the other, and a conical cap above the upper ring, substantially as described.

In witness whereof I hereto affix my signature in presence of two witnesses.

WILLIAM J. KAYSER.

Witnesses:

CARL Bone, G. BONG. 

